What's the Name of That Book??? discussion

The girl wakes up with no memory at the hospital. Her name the body isn't her body, I think it look like her real one not sure. Her name starts with an A. The person people said she was not who she feels she is. She doesn't remember anything and she has flashbacks to her ctual world and how she lived.
She's from an alternate dimension Her boyfriend in that world. They weren't allowed to be together in their world and his mom/ grandmother convinced him to exchange her. His name starts with an 'M'. He tries to help her with her memory to remember him. He accidentally scares her sometimes by saying too much or too little.

The girl who's body she's in actually died, I don't remember how. The person who says she her mom is really happy about her not dying( also knows a lot of everything) she's hiding something from the Main character.
She knows that something isn't right. And somehow that she was ratted out for something. She was poor and came from a situation with her mom. Mom was nice but she died and bad things happened afterword. The world she came from was very restrictive on things like who you marry, where you get your job, who your friends with all that stuff. She dies again after a friends she's made abusive dad hits her out the window as she tries to protect him.

It turned out that the small helpless looking guy was the one who snitched.
The old lady who gives her a pie and advice was the mom/grandmother that sent her here to get away from the boy(M). People don't know her when she tells them abut her.
There was an incident where in science the was a equation for a bomb in her notebook A The Main Character didn't know that it was there, she gets in a lot of trouble.
I read in 2015-2016. The cover was kinda like Before I Fall and Every Day and it was a paperback. Time period was set in kinda late 2000s. It was in the US or the UK but most likely US.

A guess - Adaptation by Malinda Lo?

Does she wake in a post-apocalyptic or dystopian world? If so, what is "wrong" with the current world?

Maybe The Adoration of Jenna Fox by Mary E. Pearson ? I haven't read it but it's description sort of matched yours.

Kris wrote: "A guess - Adaptation by Malinda Lo?

Does she wake in a post-apocalyptic or dystopian world? If so, what is "wrong" with the current world?"

Her original world was kinda a dystopian type world the one she woke up in was normal. The book didn't focuse on too many details like that.
In her world I don't remember too much about it, but she was in school kinda like college. Like it was dangerous to fail and she lived in a small apartment/attic. I think that how the two met, at her apartment building.

Louie wrote: "Maybe The Adoration of Jenna Fox by Mary E. Pearson ? I haven't read it but it's description sort of matched yours."

No it not this one. It sounded close though.

As I Wake by Elizabeth Scott?

Ayshe wrote: "As I Wake by Elizabeth Scott?"

Yes, Yes, Yes! This is it. Thank you.